Stability and Angular-Momentum Transport of Fluid Flows between Corotating Cylinders

被引：75
作者：
Avila, M. [1 ,2 ]
机构：
[1] Max Planck Inst Dynam & Self Org MPIDS, D-37077 Gottingen, Germany
[2] Univ Erlangen Nurnberg, Inst Fluid Mech, D-91058 Erlangen, Germany
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 12期
基金：
英国工程与自然科学研究理事会;
关键词：
TAYLOR-COUETTE FLOW; INDEPENDENTLY ROTATING CYLINDERS; ACCRETION DISKS; REYNOLDS-NUMBER; TURBULENCE; INSTABILITY; DYNAMICS;
D O I：
10.1103/PhysRevLett.108.124501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Turbulent transport of angular momentum is a necessary process to explain accretion in astrophysical disks. Although the hydrodynamic stability of disklike flows has been tested in experiments, results are contradictory and suggest either laminar or turbulent flow. Direct numerical simulations reported here show that currently investigated laboratory flows are hydrodynamically unstable and become turbulent at low Reynolds numbers. The underlying instabilities stem from the axial boundary conditions, affect the flow globally, and enhance angular-momentum transport.
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页数：5
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